I was in a jewelry store, and I realized how hard it is to figure out the
markup on gold jewelry, so I did a little code kata...
Loads in 4.0 with:
�� �� Gofer it
�� �� �� �� smalltalkhubUser: 'SeanDeNigris' project: 'SeansPlayground';
�� �� �� �� configurationOf: 'GoldRush';
�� �� �� �� loadDevelopment.
�� �� (#GoldRushSpecification asClass>>#testAcceptance) browse.
"You can describe a piece of jewelry like:"
�� �� �� �� | ring |
�� �� �� �� ring := GoldJewelry new
�� �� �� �� �� �� �� �� weight: 4.1 grams;
�� �� �� �� �� �� �� �� carats: 18;
�� �� �� �� �� �� �� �� price: 275 dollars;
�� �� �� �� �� �� �� �� yourself.
"And then see how much of a premium you're paying over the gold's melt value
e.g.:"
�� �� �� �� ring markup should equal: ring price - expectedGoldValue.
�� �� �� �� ring percentOverSpot percent should equal: ring price / expectedGoldValue -
1.
"If you inspect a GoldJewelry with GT Tools, you will see a special "Gold"
tab with the same calculated values (i.e. #markup�� and #percentOverSpot)"
____________________________________
This was an interesting and fun test of Aconcagua, GT Tools, and Pharo 4.0
:)
n.b. it pulls the gold spot price off the web, updating daily.
Have fun!
-----
Cheers,
Sean
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View this message in context: http://forum.world.st/ANN-Toy-Gold-Rush-tp4806070.html
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